The Signo range provides super smooth writing with opaque pigment ink. Writes in a metallic sheen on both light and dark paper. The 0.8mm tip writes a 0.5mm line. This pen is part of the Uni-Ball UM-120 range of gel rollerballs. The ink is waterproof and fadeproof, ensuring your writing lasts. The metallic ink offers a unique sheen that stands out on both light and dark surfaces.